Combination sucker rod socket



Oct. 27, 1931. w. A. OBANNON 1,828,938

COMBINATION SUCKER ROD SOCKET Original Filed March 6, 1928 2 Sheets-Sheet 1 MATTORNEYS Oct. 27, 1931.

w. A. OBANNQN COMBINATION SUCKER ROD SOCKET Original Filed March 6. 192B 2 Sheets-Sheet 2 Tisj Patented Oct. 27, 1931.

WA TER A. QBANNON, or

ruLsA, vOKLAHOMA;assreruoa 'ro WALTEROBANNCN 00.; A CORPORATION or oKLAHoi/ra COMBINATION sUoKERiionsooxn'r Original application filed'larch e, 1928, Serial ,Nbi 259,544. Divided and this application files-May 23, v

1929. serial No. 365,396.

Known fishingtools of the sucker rod-v type commonly embody one or more slip unlts, each composed of complemental sections which are held in their cooperative relation, 7

if at all,- by some element which merely acts to prevent displacement of one section relative to another axially of their support while permitting of their expansion or opening action only incident to movement ofthe sucker m rod passing into the unit.

I have found. it advantageous to maintain, the slip unit in expanded condition against the walls of the socket barrel, as this insures at all times the maximum opening of the slips and proper engagement with the sucker rod or its joint. One of the main objects of the present invention'is'to provide a slip con struction embodying novel resilient means which not only servesto maintain the slip sections properly disposed'or aligned, but also tends to expand said sections and cause them to follow the wallof the barrel, in which they are seated, .as the slips move upwardly, this application constituting a division of my copending application filed March 6, 1928,

Serial-No. 259,544. r i -V a Another object *of the invention is-to providea multiple slip socket in which primary and secondary slips are arranged in independent relation to each other, so that one set may function separately in respect to the other, or-more specifically speaking,,move longitudinally of the barrel toward or-from eachother, as the case maybe.

'It is a further object of this invention to provide means for-sustaining oneof the slip units in such a way as to prevent the application of pressure to the other unit which would tend to cause the last mentioned'unit to be unduly tightly wedged into its seat. To this end I support the upper or secondary slip unitfrom'the barrel,-or, more strictly speaking, from the connector head of the barrel, so that in making rod catches the weight imposed upon the upper unit is directly transmitted to the socket body.

- Other and furtherobjects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims. r

Referring to the drawings:

F ig; 1' is alongitudinal sectional view of v the multiple slip type wherein the upper slip unit and its holder are movablelongitudinally of the barrel relative to the lower slip unit, 1 a

Fig. 2 is a similar section of a slightly modified.form wherein the upper slip is nor mally held in spaced relation to the lower slip unit. by an intermediate spring means;v

Fig. 3 is a longitudinal section of another form in which the upper slip holder is held stationary bya threaded connection with the head of thesocket;

Fig. 4 is a fragmentary sectional view of a modification of the formshown in Fig. 3 in which the holder for the upper slip unit is connected to the vhead by spring fingers; and

Fig. 5 is a detail view of the expander used inconnection with the different forms of the invention. 1 a

Like reference characters designate corresponding parts through the several figures of'the drawings; I I 7 In all of the forms of the socket hereinafter described, there is provided the usual barrel 1 internally threaded'in its upper end to receive the threaded head extension 2; At its lower end the bore of the barrel is tapered and within this tapered portion is seated the main or primary slip unit 3 which is tapered externally to conform to the shape of the barrel taper. The slip unit ispreferably' formed with a tapered bore having the customary wickers 3. At the top of this bore arranged corresponding to the primary unit,

except as to its size and the form of its bore, which preferably is a straight borehaving the usual gripping wickers 5'. This unit is designed for gripping the rod,"while the primary unit takes the joint or box thereof, the engagement of one or the other depending upon where the break occurs in the length of the sucker rod. The secondary slips are seated within a sleeve-like holder 6 which is internally tapered. atitslower end soas to form a seat to receive the upper slip units and to form a constricted passage communicating with the lower unit. of sufficient length to permit" a limited amount of movement of the slip elements upwardly in the socket barrel, such movement being restricted.by contact of. the upper end of the sleeve or holder with the threadedextension 2 of the head. The slip members are held in their'seatedpositions by; a: suitable spring? which is interposed between :the headand the. upper; or secondary set of slips.- Owing; tothe fact that the holder 6' rests upon the primary slips, .the pressure exerted by the spring 7 upon the upper slip-s enables the: spring to transmit its pressure. to the primary; slips 1 in an obvious 1 manner.

It-willxber apparent. that when the sucker rod: socketi isslowered: into contact with the rod which it .is desired to fish iout of.'the.well,

saidirod willi pass into thelower: slipssuntili iti comesinto contact withr-the latter or'with the secondary set of slips, depending. upon the point of break-initherrode This-causes the slip unit: on units to move upwardly in:

thesocket barrel until said movement. is'

stopped. by' contact with the head of' the socket. llhereuponithe-socket is raised and i the slip units which were permitted to r expand by movement into the larger-portion oh the barrel or theholder, as :the case -may be, will then contractby, virtue of. coopera tion of the slips with their respectivetapered seats;thewickersbitinginto the metal sufficiently t'oiprovide a-positive gripping ac.-

tionupoxrthe rod, enabling'thelatter to'be' elevated in 1 the usu al manner;

Passing:- now-. to :the form .of socket device which :is-shown in Fi 2-, Lhave modified that form i disclosedin Fig; (1i iirtwo essential 1 res spects. In.-. the. first placethe; sleeve-likeholder: Sta-is formed with an extension 6?) at its lowerend, and in the second placea second spring 7 a isrdisposed between the holden and the.- primary slips, seating atits lowenend:

uponitheprimaryslips: and at its upperend:

within. the extension 66 just mentioned.

Otherwise. the construction and operation of the *deviceis -the. same asdescribediin connection withrllig. .l'.. The-primary; difference re sidesinxthefact; that the upper 'set of slips and its .-liolderisheld in spaced relation to the primary set of slips normally, but in=both of said constructions these slip 1 units are. independent-and may move relative to each other. Theadvantage of such a construction .will be apparent in. that a gripping-faction mayobtained .on both the .rod and the box or joint,

ascontactoflthese parts ismade withthe're The sleeve 6 is encyto cause theprimary slips tobe wedged into their tapered seat, rendering it difficult at times to displace them without injury. For this reason I prefer to make my socket device in the form orforms now to be described Referring to the preferred form of socket shownin Fig. 3, I have modifiedthat construction disclosed in Fig. 2 above described,

by providingthe head with a second threaded extension 2a with which the holder 60 has threaded connection, so that in .this instance the holder is held stationary and functions merely to support the. secondary slips-in spaced relation to theprimary slips while preventing in operation any weight being transmitted to the primary slips when the secondary slips are makingathe catch. Inthis form, as in the preceding. one, the spring 7a is interposed between the holder and the primary slips and acts to hold thelatternormal:v

ly in seatedposition at thelowen end. of thebarrel.

Referrmgto-the fOI'll'lzOf device shown in Fig.- l, I! have modified the sleeveholderirr this form designated 6d and construction of the head, the latter being prov-idedwith; an extenslon 20 havingan-annular groove 2cl tor receive the upper; end of the holder member.

This'holder. member is split longitudinally one ormore times, as-indicatedat 66-, so that a series of fingers is provided, each ofrwhichv is formed with a head 6; to engage inithe groove 2d.. In assembling the" socket. the secondary slips are disposedinthe holder. 6d

and. saidiholderis thenpushed onto the sup; porting. extension 20 ofthe head, whereupon the lower. slips andthe barreliare screwed in Theslips are omitted.-

place upon the. head; fromtthe drawing inFig: l'since it. will be understood that they are employed-in a cor.- responding manner to that described with reference to the other forms of they device.

It: will be understoodthat slight changes may be made in details of. construction of these various forms especially with reference torthe type of boreofthe slipsandthe. diameterofthe sameso that I do not wish.

to be confined to the typesspecifically illustrated. in. the drawings.

Havingthus described my invention, What; I claim as new anddesire-to secure by Letters Patent of the United-States is 1. Asucker rodsocket comprising-a barrel,

having aslip seat at one end thereof, a slip unit mounted in said barrel and cooperating with said seat, a second slip unit disposedover the first unit, each of said units being composed of complemental sections, and means cooperating with the sections tending to hold them in expanded positions.

, 2. A sucker rod socket comprising a barrel having a slip seat at one end thereof, a slip unit mounted in said barrel and cooperating with said seat, a second slip unit disposed over the first unit, a holder depending within the barrel for sustaining the second unit, and spring means intermediate said holder and the first unit tending to hold the first unit in its seat.

3. A sucker rod socket comprising a barrel having a slip seat at oneend thereof, a slip unit mounted in said barrel and cooperating with said seat, a second slip unit disposed overthe first unit, a holder for sustaining the second unit, and spring means intermediate said holder and the first unit tending to hold the first unit in its seat, said holder including means for preventing the crushing of the spring means aforesaid.

4:. A sucker rod socket comprising a barrel having a tapered slip seat at one end thereof,

a slip unit mounted in said barrel and coopcrating with said seat, a second slip unit disposed over the first unit, and separate stationary means coacting with one of said units for limiting the movement of the other unit to prevent complete removal from the tapered seat of the barrel.

5. A sucker rod socket comprising a barrel, a plurality of slip units mounted therein, and means separate from said units and barrel but functioning common to said slip units for limiting the movement thereof longitudinally of the barrel.

6. A sucker rod socket comprising a barrel,

a plurality of independently movable slip units mounted therein, and means common to said slip units for limiting the movement thereof longitudinally of the barrel, said means constituting a holder for one of said slip units whereby to hold said slip unit in spaced relation to the other unit.

7*. A multiple slip socket comprising a barrel. a head therefor, upper and lower slips in said barrel having bores of different diameters, and means separate from the barrel for supporting the upper slips from the head.

8. A socket comprising a barrel, a set of slips mounted in the barrel, a second barrel suspendedlv fixed within the first-named bartapered bore, a set of slips retained in the bore, a barrel suspended within the firstnamed barrel having a tapered bore, a .set of supplemental slips retained in said last-named bore, and yielding means for independently {)etaining the sets of slips intheir respective ores.

11. A socket comprising an outer barrel,

expansible slips retained in the barrel, an inner barrel spaced from the walls of the outer barrel, andexpansible slips retained in the inner barrel and operable independently of the first-named slips.

12. A socket comprising an outer barrel, a set of slips retained in the barrel,an inner barrel mounted within the outer barrel, a coil spring bearing against the slips to retain the slips in functional position, a supplemental set of slips retained inthe inner barrel, and a second coiled spring contained within the inner barrel and bearing against the supplemental slips.

13. A socket of the character described including a single elongated outer barrel interiorly tapered at the lower end, a set of exteriorly tapered slips operable within the lower end of the barrel, a second barrel suspended within the upper end of the outer barrel, spaced from the wall of the outer barrel and having an interiorly tapered lower end, a set of exteriorly tapered slips operable within the lower end of the inner barrel, 8. cap for theouter barrel, a spring engaging the lower set of slips and a spring in the inner barrel engaging the upper slips for the purpose set forth.

In testimony whereof I afiix my si nature.

WALTER A. OBAN ON.

rel, a set of slips in the second-named barrel,

and means for retaining the sets of slips in. position within their respective.

functional barrels.

9. A socket comprising a barrel, a cap on the barrel, a set of expansible slipsretained in the barrel, a second barrel fixed to the cap, a supplemental set of expansible slips in the second-named barrel, and yielding means for retaining the slips in contracted position.

10. A socket comprising a barrel having a v 

